| Summary: | 碩士 === 逢甲大學 === 水利工程與資源保育研究所 === 96 === In this study, wave spectrum is used to describe the random waves in the real seas. Wave run-up is calculated on the sloping faces of smoothed and rough dikes, respectly, by splicing spectrum. Comparing the calculated values with the model testing data, a modified equation is regressed, to improve the calculated values of run-up on smoothed sloping dike.
Besides, three different types (#240, #400, #800) of 3M scotch-brite pads are choosen to cover on the sloping face of dike as to imitate the rough surface of dike. According to Nikuradse’s definition and analysis sieve comparison table, the roughness factor are 0.063（#240）, 0.038 （#400）, and 0.015（#800）.Under action of same wave condition, run-up data are measured both on smooth and rough slope synchronously. The roughness reduction factor is then analyzed with the measured data.
Finally, run-up equations for rough slope of dike are gained by modifying the equation for the smooth slope of dike with regard to roughness reduction factor. This practical computing model can be applied for engineering.
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